Open-front gas-heater.



P. MGK. BRADLEY.

OPEN FRONT GAS HEATER.

APPLICATION FILED 001'. 5, 1912.

1,121,462, Patented Dec.15,1914.

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BY WM man/ms THE Nom'als PETERS c0. F'HOT0-LITHO., WASHING row, 0. c.

P. McK. BRADLEY.

OPEN FRONT GAS HEATER.

APPLICATION FILED OCT. 5. 1912.

1,121,462. Patented Dec. 15,1914.

2 sHEBTs- SHEBT 2.

WITNESSES INVENTUR 0/?72 Ffifllfl,

ATTORNEYS THE NORRIS PETERS 20., FHOTO-LITHQ, WASHINGTON. D. C

PORTE MOKEEN BRADLEY, 0F J'OPLIN, MISSOURI.

Specification of Letters Patent.

OPEN-FRONT GAS-HEATER.

Patented Dec. 15, 1914.

Application filed October 5, 1912. Serial No. 724,061.

To all whom it may concern:

Be it lmown that ,I, PORTE M. BRADLEY, a citizen of the United States, and a resident of Joplin, in the county of Jasper and State of Missouri, have invented-an Improvement in Open-Front Gas-Heaters, of whichv the following is a specification.

My invention is an improvement in that class of gas heaters having an open front and provided with curved reflector plates extending backward and upward from the base and forming the back of the cavity or open front of the heater.

My invention is embodied in several features of construction, arrangement, and combination of parts which reduce the cost and increase the strength, durability, and efficiency of the heater as compared with those of the usual type.

In the accompanying drawings Figure 1 is a front view of the heater. Fig. 2 is an enlarged vertical cross section of the same. Fig. 3 is a detail section on the line 33 of Fig. 2. Fig. 4 is a perspective view of the front baflie plate. Fig. 5 is a perspective view of the rear baflie plate. Fig. 6 is a vertical section of the heater taken through its longer diameter. Fig. 7 .is a horizontal section of the heater taken on the line 77 of Fig. 2. Fig. 8 is a perspective view illustrating certain details of construction and arrangement.

The body 1 of the heater is oblong in horizontal section, as shown in Fig. 7, and in the process of manufacture it is stamped out of a single piece of sheet metal whose vertical edges are united at the middle of the back of the heater by a folding seam 2, as indicated in Fig. 7. The body is open at the 7 bottom to admit air, as indicated by arrows in Fig. 2, and is closed at the top, as indicated in Figs. 2 and 6. The one-piece body 1 is further constructed with integral sides or wings 3 which are bent inward into parallel position and form the sides of the open front of the heater. The details of curvature of this portion of the heater are indicated in the section shown in Fig. 3. The rear curved edges of the wings 3 are bent toward each other at a right angle, thus forming a flange 4, upon which the curved copper reflector 5 ordinarily employed in this class of heaters rests and is supported. In order to hold these two parts duly engaged, I solder metal lugs or tonguesfi to the sides 3 and bend them outward over the adjacent edges ofv the reflector 5see especlally F1g.8. By this construction of the wings 3 integrally with the main portion of the body 1, instead of attaching them thereto as separate pieces by meansof rivets or secured to the front wall of the heater by rivets or bolts as shown. The inner end of this baflle plate is curved upward and backward as shown.

The rear baffle plate 10, shown detached in Fig. 5' and in working position in Fig. 2,

is secured at one point only to the body of j the stove by means of bolts, rivets, or screws 11. In other styles of heaters of this class, the reflectors or bafie plates are ordinarily bolted'to the ends as wellas the front of the body, and I have therefore considerably reduced the cost of these attachments by securing them at a single point. Also by providing them with side flanges, 10 they are stiffened to the required degree. The upper end of the baffle plate 10 is curved toward the front of the heater and the inner end of baflie plate 7 is curved upward and backward, whereby the current of heated gases is directed upward and toward the front as they pass between the opposed ends of the two baffles.

By the arrangement of the baflle plates, a large volume of air is introduced from the bottom of the stove so as to mix with the gas discharged from the pipe 12, arranged, as shown in Fig. 2, above'the reflector 5 and near the front of the heater. I thus secure a perfect combustion without the deposit of soot, which is a common incident in the use of heaters of this type. space at the ends of the bafiie plates between them and the ends of the body of the heater, the cool air coming in from the bottom of the stove is subjected to the action of heat rays in away which is not practicable by the old construction and arrangement and a greater calorific effect is thereby produced.

It will be noted-see Figs. 1 and 2that openings 13 are provided in the heater front just above the horizontal gas-pipe 12 which allows air to pass freely between the burner and the frontbafl le plate and prevents the By providing a t fectively supportvcombustion and; securethe Without the deposit a described.

flame from striking directly upon the bafilel plate and depositing soot thereon. Other perforations 14: are formed at the top of the heater, as indicated in Figs. 1,2, and 6,- in;

front opening and inwardly proj ecting par aliel Wings forming the sides of said opencopies of this patent may beobtained fior'fivecents each, by addressing the Commissioner of iatentsi A heater coinprising a bod h yi ing, the rear or inner edges of the Wings being bent and projecting toward each other,

a back plate constituting a reflector Whose side edges rest upon the in-bent portions of said Wings, and right angularrlu'gs spanhing; exteriorly the joint formedpby said Wings and reflector and secured in placeyas FORTE MoKEEN BRADLEY. Witnesses: i

FRED M. JQHNSON,, EDNA i Washington; 3). Ga 

